cell to cell communication

Question 1

describe endocrine cell signalling

Answer 1

hormones secreted into bloodstream, and travel to distant cells/organs

Question 2

describe paracrine cell signalling

Answer 2

cells secrete hormone which is distributed locally

Question 3

describe synaptic cell signalling

Answer 3

neurotransmitter released into synapse to carry electrical signal from one cell to another

Question 4

describe ion gated cell signalling

Answer 4

receptor on ion gated channel, when a ligand bind it will cause a change in structure of channel

Question 5

what conditions are associated with damage to ion gated cell signalling

Answer 5

epilepsy
cardiac dysfunction

Question 6

describe G-protein coupled cell signalling

Answer 6

transmembrane receptor, ligand bind to outside, causing the inside component of receptor to bind to GTP, converting it to GDP and causing cellular change

Question 7

describe enzyme linked cell signalling

Answer 7

ligand binds to 2 adjacent receptors, they phosphorylate eachother creating reaction cascade which will eventually be terminated by signalling GTP proteins or protein phosphorylsation

Question 8

describe the 2 types of contact cell signalling

Answer 8

gap auctions between 2 connected cells

signalling molecule of cell surface of one cell, relying on contact with receptor on cell surface of another cell

Question 9

what condition would be associated with damage to enzyme linked cell signalling

Answer 9

cancer- no RAS to stop cell signalling, constant reproduction

Question 10

what condition is associated with damage to production of G proteins in G protein coupled receptor cell signalling

Answer 10

pseudohyploparathyroidism

Question 11

what condition is associated with reduced signal initiation in G protein coupled receptor cell signalling

Answer 11

whooping cough

Question 12

what condition is associated with increased signal initiation in G protein coupled receptor cell signalling

Answer 12

hypertension